When you're fuckin a girl, you pull out your dick almost all the way - SLOWLY - teasing her and making her thirsty for you to bring it back, you pause for a second, gather your strength, and ram it back in with the force of a freight train, clenching your fists and scrunching your face.

Man, I got this girl so wet last night. Gave her the longboys and she got off in 3 minutes tops.